The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 1991
Filed:
Dec. 07, 1990
Applicant:
Inventor:
Joseph J Cleveland, Towanda, PA (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 98 ; 501 97 ; 106 1405 ; 264 65 ;
Abstract
A corrosion resistant ceramic article consisting essentially of a first phase of silicon nitride and a second continuous phase of cordierite. The article is formed so that the surface is a substantially continuous oxide material for enhancing the corrosion resistance.